WO2021179182A1

WO2021179182A1 - Data closing method and apparatus, and device and storage medium

Info

Publication number: WO2021179182A1
Application number: PCT/CN2020/078668
Authority: WO
Inventors: 杨皓睿
Original assignee: Oppo广东移动通信有限公司
Priority date: 2020-03-10
Filing date: 2020-03-10
Publication date: 2021-09-16
Also published as: CN114982311B; CN114982311A

Abstract

Provided are a data closing method and apparatus, and a device and a storage medium, which relate to the technical field of communications. The method comprises: sending a first message to a first network element, wherein the first message comprises first indication information. Since the first indication information is used to indicate that non-3GPP data of a terminal is closed, a data closing function in non-3GPP can be realized by means of the carried first indication information.

Description

Data closing method, device, equipment and storage medium

Technical field

This application relates to the field of communication technology, and in particular to a data closing method, device, equipment, and storage medium.

Background technique

The 5th generation (5G) network architecture not only supports terminals to access public land mobile networks (Public Land Mobile Network, PLMN) through 3GPP access technology, but also supports terminals access through non-3GPP (non-3GPP) access technology PLMN. At present, PLMN allows terminals to simultaneously access through 3GPP access technology and non-3GPP access technology, and the terminal can establish protocol data unit (PDU) sessions based on the 3GPP access network and the non-3GPP access network respectively.

When 3GPP accesses the network, the network is configured with exempt services for the terminal. When the traffic is closed, the data transmission of the exempt services will not be affected. In addition, when the user wants to turn off data traffic, the terminal initiates a PDU session modification (PDU session modification) process to the network for each PDU session (PDU session), and updates the data closed state to the network. After the network receives the terminal setting to close the data, it no longer performs data transmission and does not charge for data.

When accessing the network through a non-3GPP access technology, how to close the data (or data traffic), there is currently no relevant solution.

Summary of the invention

The embodiments of the present application provide a data closing method, device, equipment, and storage medium, which can close data in a non-3GPP access technology and save user fees. The technical solution is as follows:

In one aspect, a data closing method is provided, which is applied to a terminal, and the method includes:

Send a first message to the first network element, where the first message includes: first indication information, where the first indication information is used to indicate that the non-3GPP data of the terminal is closed.

On the other hand, a data closing method is provided, which is applied to a first network element, and the method includes:

Receiving a first message from the terminal, where the first message includes a data closing instruction for non-3GPP access;

Notifying the third network element that the non-3GPP data of the terminal is closed.

In another aspect, a data closing device is provided, which is configured in a terminal, and the device includes:

The sending module is configured to send a first message to a first network element, where the first message includes: first indication information, and the first indication information is used to indicate that the non-3GPP data of the terminal is closed.

In another aspect, a data closing device is provided, which is configured in a first network element, and the device includes:

A receiving module, configured to receive a first message from the terminal, where the first message includes a data closing instruction for non-3GPP access;

The sending module is used to notify the third network element that the non-3GPP data of the terminal is closed.

In another aspect, a terminal is provided, the terminal includes a processor and a memory, the memory stores at least one instruction, and the at least one instruction is used to be executed by the processor to implement any of the above aspects executed by the terminal. One described method.

In another aspect, a first network element is provided, the first network element includes a processor and a memory, the memory stores at least one instruction, and the at least one instruction is used to be executed by the processor to implement the foregoing Aspect any of the methods described by the first network element.

In another aspect, a computer-readable storage medium is provided, and instructions are stored on the computer-readable storage medium. When the instructions are executed by a processor, the above-mentioned method is executed by a terminal or executed by a first network element. Methods.

On the other hand, a computer program product containing instructions is provided, which when running on a computer, causes the computer to execute the method executed by the terminal or the method executed by the first network element as described in the above aspect.

The beneficial effects brought about by the technical solutions provided by the embodiments of the present application include at least:

The terminal may send a first message to the first network element, where the first message includes: first indication information. Since the first indication information is used to indicate that the non-3GPP data of the terminal is closed, the data closing function in the non-3GPP can be realized through the carried first indication information.

Description of the drawings

In order to more clearly describe the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings that need to be used in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work.

FIG. 1 is a schematic diagram of the architecture of a communication system provided by an exemplary embodiment of the present application;

Fig. 2 is a block diagram of a 5G communication system provided by an exemplary embodiment of the present application;

Fig. 3 is a flowchart of a data closing method provided by an exemplary embodiment of the present application;

Fig. 4 is a flowchart of a data closing method provided by another exemplary embodiment of the present application;

Fig. 5 is a flowchart of a registration method provided by an exemplary embodiment of the present application;

Fig. 6 is a flowchart of a data closing method provided by another exemplary embodiment of the present application;

Fig. 7 is a schematic structural diagram of a data closing device provided by another exemplary embodiment of the present application;

Fig. 8 is a schematic structural diagram of a data closing device provided by another exemplary embodiment of the present application;

Fig. 9 is a schematic structural diagram of a communication device provided by an exemplary embodiment of the present application.

Detailed ways

In order to make the purpose, technical solutions, and advantages of the present application clearer, the implementation manners of the present application will be described in further detail below in conjunction with the accompanying drawings.

Before describing in detail the data closing method provided in the embodiment of the present application, a brief introduction to the related terms and implementation environment involved in the embodiment of the present application will be given first.

First, the 5G core network architecture involved in this application is explained.

The 5G (5th Generation Wireless Systems, fifth-generation mobile communication technology) core network architecture emphasizes the separation of the control plane and the user plane, including independent scaling of the capacity of the two. For example, if you need more control plane capacity, you can expand the control plane alone instead of simultaneously expanding the user plane. Second, the 5G core network architecture uses a service-based identification method, where services and functions are the focus of attention. The 5G core network architecture is mainly composed of NF (Network Function), which uses distributed functions to deploy according to actual needs. The addition and withdrawal of new network functions does not affect the overall network functions.

Fig. 1 is a schematic diagram of the architecture of a communication system provided by an exemplary embodiment of the present application. As shown in Figure 1, the communication system includes user plane functions, control plane functions, and other types of functions.

User plane functions include: UPF (User Plane Function), which is the gateway between the RAN and external networks such as the Internet. It is responsible for processing data packet capture routing and forwarding, data packet inspection, service quality processing, and Data packet filtering, flow measurement, etc. In addition, it can also serve as an anchor point for mobility between RATs (Radio Access Technology) when needed.

Control plane functions include: SMF (Session Management Function) processing terminal (also known as User Equipment, User Equipment, UE) IP allocation, policy implementation control, and general session management functions. AMF (Access and Mobility Management Function, access and mobility management function) is responsible for the control signaling between the core network and the terminal, the security of user data, idle state mobility, and signing authority. The function that runs between the core network (more specifically, AMF) and the terminal is sometimes called NAS (Non-Access Stratum) to distinguish it from AS (Access Stratum). Handle the functions between the terminal and the non-access network.

In addition, the core network of the communication system can also handle other types of functions, such as PCF (Pelicy Control Function) responsible for policy rules, and UDM (Unified Data Management) responsible for authentication and access authorization. ), NEF (Network Exposure Function), NRF (NR Repository Function, NR storage function), AUSF (Authentication Senver Function, authentication server function) that handles the authentication function, and AF (Application Function, application function) ).

The concrete realization of the core network function can be various. For example, all functions can be implemented in a single physical node, or distributed on multiple nodes, or run on a cloud platform.

The 5G core network architecture not only supports terminal access to PLMN (Public Land Mobile Network, public land mobile network) through 3GPP access technology, but also supports terminal access to PLMN through non-3GPP (non-3GPP) access technology. Among them, the 3GPP access technology can be the RAN (Radio Access Network) radio access technology in the 5G system or other future 3GPP access technologies, etc.; the non-3GPP access technology can be Wi-Fi (Wireless Fidelity, Wireless fidelity) access technology, WiMAX (Worldwide interoperability for Microwave Access) technology, CDMA (Code Division Multiple Access, code division multiple access) access technology or other future non-3GPP access technologies, etc., This application does not limit this.

Next, the implementation environment involved in the embodiments of the present application will be briefly introduced.

Figure 2 is a block diagram of a 5G communication system provided by an exemplary embodiment of the present application. As shown in Figure 2, when a terminal accesses a PLMN through 3GPP access technology, it accesses the PLMN through a RAN device; the terminal accesses a PLMN through a non-3GPP access technology When accessing the PLMN, the PLMN is accessed through untrusted non-3GPP access point (untrusted non-3GPP access point) and N3IWF (non-3GPP Interworking Function, non-3GPP interworking function) equipment. Among them, the PLMN may include AMF network elements, SMF network elements, and UPF network elements. The RAN device or the N3IWF device can access a DN (Data Network) through a UPF network element. The AMF network element is responsible for access and mobility management, the SMF network element is responsible for session management, etc., and the UPF network element is responsible for data packet routing and forwarding.

Among them, the terminal communicates with AMF network elements through interface 1 (abbreviated as N1); RAN equipment or N3IWF equipment communicates with AMF network elements through N2 interface (abbreviated as N2); RAN equipment or N3IWF equipment both communicate with UPF through N3 interface (abbreviated as N3) Network element communication; SMF network element communicates with UPF network element through N4 interface (abbreviated as N4); AMF network element communicates with SMF network element through N11 interface (abbreviated as N11). The names of the interfaces between the various network elements in Figure 1 are only explained as examples. In addition, in the 3GPP standard, there is an alternative reference point description method that focuses on point-to-point interaction between functions. Therefore, the above-mentioned various interfaces can also be referred to as reference points. For example, N1 is the reference point between UE and AMF, and N4 is the reference point between SMF and UPF. This application does not limit the names of reference points or interfaces, as long as the interaction between the above functions can be realized.

Optionally, the RAN equipment mentioned above refers to the equipment when accessing the PLMN through the 3GPP access technology, such as a base station, a BNG (Broadband Network Gateway, broadband network service gateway), and an aggregation switch. This embodiment of the application There is no restriction on this. Among them, the base station may include various forms of base stations, such as: macro base stations, micro base stations (also referred to as small stations), relay stations, and access points, which are not limited in this application.

Optionally, the N3IWF device mentioned above refers to the device when accessing the PLMN through non-3GPP access technology, such as BNG, BRAS (Broadband Remote Access Server, broadband remote access server), fixed network access gateway And WLAN (Wireless Local Area Network, wireless local area network) access gateway, etc., this application does not limit this.

The names of the RAN equipment, N3IWF equipment, AMF network element, SMF network element, and UPF network element in FIG. 2 do not limit the function of the network element. In 5G networks and other future networks, RAN equipment, N3IWF equipment, AMF network elements, SMF network elements, and UPF network elements may also have other names, which are not limited in this embodiment of the application. For example, the N3IWF equipment may also be replaced with NG-PDG (Next Generation Packet Data Gateway) or N3IWF (non-3GPP Interworking Function) network elements, untrusted non-3GPP access Inbound gateway, trusted non-3GPP access gateway, AGF (Access Gateway Function, fixed network access gateway function). For example, AMF network elements may also be replaced with AMF or AMF entities. For example, SMF network elements may also be replaced with SMF or SMF entities. Figure 2 is only an example and does not constitute a limitation to the application.

In addition, the PLMN may also include unified UDM network elements, AUSF network elements, PCF network elements, etc., which are not limited in the embodiment of the present application.

In the above 5G network architecture, the terminal can access different AMF network elements in the same PLMN through 3GPP access technology and non-3GPP access technology; or according to the existing mechanism, the terminal can also access different AMF network elements in the same PLMN through 3GPP access technology and non-3GPP access technology. The access technology accesses the same AMF network element in the same PLMN; or, the terminal can access different AMF network elements in different PLMNs through 3GPP access technology and non-3GPP access technology. Qualify.

After introducing the relevant terminology and implementation environment involved in the embodiments of the present application, the data closing method provided by the embodiments of the present application will be described in detail below with reference to the accompanying drawings.

Please refer to FIG. 3, which is a flowchart of a data closing method according to an exemplary embodiment of the present application. The method may be applied to the 5G communication system shown in FIG. 2 above. The data closing method may include the following At least part of the content:

Step 310: The terminal sends a first message to the first network element, where the first message includes: first indication information, where the first indication information is used to instruct the non-3GPP data of the terminal to close.

The first network element may be an SMF, and the first message may be a PDU session establishment or modification request.

Among them, PLMN allows the terminal to simultaneously access through 3GPP access technology and non-3GPP access technology. The terminal can establish a PDU (Protocol Data Unit) session based on the 3GPP access network and the non-3GPP access network respectively. .

After establishing a PDU session, the terminal can rebuild and modify the established PDU session. When modifying, it needs to send a PDU session re-establishment or modification request to the SMF of the access network. The access network can be a 3GPP access network and/or a non-3GPP access network. Access Network.

Since there are multiple terminals connected to the access network, multiple terminals can reconstruct and modify the established PDU session after establishing the PDU session. Therefore, each PDU session reconstruction or modification request sent by the terminal can carry the session ID (Identity Document) of the PDU session, and the AMF sends the terminal ID to the SMF, so that the SMF can determine a unique one based on the session ID and the terminal ID. Conversation.

When the user needs to close the non-3GPP data, it can be realized by sending a PDU session establishment or modification request, that is, the request can carry the first indication information indicating that the non-3GPP data of the terminal is closed.

In addition, because the NAS control plane function is located between the terminal and the AMF of the core network and the terminal, and the control plane protocol is mainly responsible for connection establishment, mobility and security. Therefore, in this application, the sent message or request can be implemented through NAS, and this application does not limit the signaling and radio bearers used in the interaction process.

The communication between the terminal and the SMF is usually indirect communication by the terminal through the AMF in the core network. However, with the evolution of the 5G network architecture, subsequent communication systems may use other communication devices or methods to perform the above-mentioned communication process. The embodiments of the present application are only explained as examples and are not intended to be limiting.

Step 320: The first network element receives the first message from the terminal.

As shown in Figure 3, when the first network element is SMF and the first message is a PDU session establishment or modification request, when SMF receives a PDU session establishment or modification request, SMF first determines the PDU session establishment or modification request Whether the first indication information is carried, and if the first indication information is carried, the UPF is notified that the non-3GPP data of the terminal is closed. Alternatively, the PDU session establishment or modification request sent by the terminal to the SMF always carries the first indication information, and the first indication information is used to indicate that the non-3GPP data is closed, and the SMF needs to notify the UPF that the non-3GPP data of the terminal is closed.

Step 330: The first network element notifies the third network element that the non-3GPP data of the terminal is closed.

Among them, the first network element may be SMF, and the third network element may be UPF. Since the role of UPF is data packet routing and forwarding, data packet inspection, service quality processing and data packet filtering, flow measurement, etc., when the terminal informs the first network element that the terminal’s non-3GPP data is closed, the first network element can Notify UPF that it will no longer transmit data packets sent by the terminal, and also stop the terminal's traffic accounting in the non-3GPP access network. In this way, in a non-3GPP access network, user charges can be saved.

When the SMF notifies the UPF that the non-3GPP data of the terminal is closed, it can also carry the identifier of the session that needs to close the non-3GPP data. UPF closes non-3GPP data for this session.

The communication between SMF and UPF can be direct communication or indirect communication through other network elements. This application does not impose restrictions on this.

Step 340: The first network element sends a second message to the terminal.

The first network element receives the first message. If the first message is a PDU session establishment or modification request, the second message sent by the first network element to the terminal may be a PDU session establishment or modification completion message.

As shown in Figure 3, SMF sends a PDU session establishment or modification complete message to the terminal. This message is used to indicate that the non-3GPP data of the session of the terminal has been closed, and the process of forwarding and routing establishment of data packets sent by the terminal is no longer performed. Stop charging for the traffic in the terminal's non-3GPP access network.

Further, after the SMF notifies the UPF that the non-3GPP data of the terminal is closed, it can wait for the UPF to confirm that the data packet sent by the terminal has been transmitted, and then send a PDU session establishment or modification complete message to the terminal. In this way, the terminal can be notified after the data packet sent by the terminal is guaranteed to be sent to avoid the terminal from not completing the sending of important messages because the non-3GPP data is closed, and the communication validity of the terminal is ensured.

The communication between SMF and terminal is usually indirect communication through AMF. However, with the evolution of the 5G network architecture, subsequent communication systems may use other communication devices or methods to perform the above-mentioned communication process. The embodiments of the present application are only explained as examples and are not intended to be limiting.

In the embodiment of the present application, the terminal may send a first message to the first network element, the first message includes: first indication information, and the first indication information is used to instruct the terminal to close the non-3GPP data. After receiving the first indication information, the first network element notifies the third network element that the non-3GPP data of the terminal is closed, and then sends a second message to the terminal. In this way, between the terminal and the core network, the data closing function in non-3GPP is realized, saving user fees.

Please refer to FIG. 4, which is a flowchart of a data closing method according to another exemplary embodiment of the present application. The method may be applied to the 5G communication system shown in FIG. 2 above. The data closing method may include At least part of the following:

Step 410: The terminal sends a first message to the first network element, where the first message includes: first indication information, where the first indication information is used to instruct the non-3GPP data of the terminal to close.

Step 420: The first network element receives the first message from the terminal.

Step 430: The first network element notifies the third network element that the non-3GPP data of the terminal is closed.

Step 440: The first network element sends a second message to the terminal.

For the specific implementation process of the foregoing steps 410 to 440, reference may be made to the embodiment shown in FIG. 3, and details are not described herein again in this application.

Optionally, the first network element in the above steps 410-440 and the following steps may be SMF, the first message may be a PDU session establishment or modification request, and the second message may be a PDU session establishment or modification completion message. The third network element may be UPF.

Step 450: The third network element receives the downlink data of the terminal.

After the terminal closes the non-3GPP data, the application server does not know that the terminal has closed the non-3GPP data traffic. Therefore, there may still be downlink data sent by the application server side. If the third network element is a UPF, when the UPF receives the downlink data, it will determine the terminal that receives the downlink data according to the identification information carried in the downlink data, or according to the previously established routing relationship.

Among them, after the UPF determines the terminal of the received downlink data, if the terminal has closed the non-3GPP data, the UPF does not perform data packet transmission. However, in order to prevent the user from missing important information, the UPF will notify the terminal that there is downlink data through other network elements.

Step 460: The third network element notifies the first network element that there is downlink data of the terminal.

This application does not limit the manner in which the third network element notifies the first network element that there is downlink data of the terminal, as long as the first network element can be notified that the downlink data of the terminal has arrived.

As an example, when the terminal is in an idle state, the arrival notification of downlink data may be a paging message. When the terminal is in the connected state, the arrival notification of the downlink data may be a Notification message of the NAS layer. The third network element may forward the above-mentioned paging message or Notification message to the first network element.

In addition, when the third network element notifies the first network element of the arrival of downlink data, the notification message may carry the terminal identifier and/or the session identifier of the terminal corresponding to the downlink data.

Step 470: The first network element asks the second network element whether the terminal can use 3GPP and non-3GPP access technologies at the same time.

Among them, the second network element may be AMF. When the first network element SMF receives the downlink data from the terminal, the SMF does not determine the status of the terminal's access to the core network. Therefore, the SMF needs to determine the processing mode of the downlink data according to the status of the access network registered by the terminal.

As an example, the SMF may send a query message to the AMF, and the query message carries a terminal identifier corresponding to the downlink data. The AMF will determine the corresponding terminal according to the terminal identifier, and query the access network that the terminal is registered with.

If the terminal is only registered with non-3GPP, after the terminal closes the non-3GPP data, no data packet transmission is performed. That is, the subsequent steps 480 to 490 do not need to be performed.

Optionally, the SMF receives a subscription notification sent by the second network element, and the subscription notification is used to notify the terminal whether 3GPP and non-3GPP access technologies are used at the same time.

As an example, when the second network element is AMF, since the SMF subscribes to the registration status of the terminal in advance, when the AMF receives the registration request of the terminal, it informs the SMF of the terminal's access network status. The terminal's access network situation may include at least one of using 3GPP access technology, using both non-3GPP and 3GPP access technologies, and using non-3GPP access technology.

In summary, after the non-3GPP data of the terminal is closed and the user still uses the 3GPP access technology, the following steps 480 to 490 are performed. That is, when the terminal is registered with 3GPP and non-3GPP at the same time, and downlink data arrives, the first network element triggers the second network element to send a notification of the arrival of the downlink data to the terminal.

Step 480: The second network element sends a notification of the arrival of downlink data to the terminal.

Wherein, the arrival notification may carry indication information of the downlink data, such as a service identifier or a data identifier corresponding to the downlink data, which is not limited in this application.

In addition, when the terminal is in an idle state, the notification of the arrival of downlink data may be a paging message. When the terminal is in the connected state, the arrival notification of the downlink data may be a Notification message of the NAS layer.

Step 490: The terminal receives the arrival notification of the downlink data sent by the second network element.

Optionally, switch the PDU session corresponding to the downlink data from non-3GPP access to 3GPP access, and use the switched PDU session to receive the downlink data.

That is, when the terminal receives the arrival notification of the downlink data, it can choose to receive the downlink data through the registered 3GPP access network to avoid missing important session messages.

Optionally, the downlink data arrival notification may carry indication information of the downlink data, so that the user can determine whether a receiving handover is required according to the indication information.

In the embodiment of the present application, when the non-3GPP data of the terminal is closed and the downlink data of the terminal exists, it can be further determined whether the terminal uses 3GPP and non-3GPP access technologies at the same time. When the terminal uses 3GPP and non-3GPP access technologies at the same time and downlink data arrives, the first network element triggers the second network element to send a notification of the arrival of downlink data to the terminal. The terminal receives the arrival notification of the downlink data, can switch the PDU session corresponding to the downlink data from non-3GPP to 3GPP, and uses the switched PDU session to receive the downlink data. In this way, on the basis of realizing the non-3GPP data closing function, it is also possible to notify the terminal using 3GPP and non-3GPP access technologies at the same time that there is a message of arrival of the terminal's downlink data, and the terminal can receive the downlink data by switching between different access networks. , To avoid missing important conversation messages.

Based on the embodiments shown in Figure 3 and Figure 4 above, in the non-3GPP access network, there are currently no unified regulations and restrictions on whether the terminal and core network have the ability to close non-3GPP data. Therefore, the terminal can access When entering the core network, report whether it has the ability to close non-3GPP data. At the same time, the second network element can also inform the terminal whether the core network to which the terminal is about to access has the ability to close non-3GPP data.

Please refer to Figure 5. Figure 5 is a flowchart of a registration method provided by an exemplary embodiment of the present application. This method can be applied to the 5G communication system shown in Figure 2 above. The data closing method can include at least one of the following: Part:

Step 510: The terminal sends a third message to the second network element, the third message includes capability information, and the capability information is used to indicate whether the terminal has the capability of closing non-3GPP data.

Since the terminal needs to register with the AMF every time it accesses the core network, the second network element can be AMF, and the third message can be a registration request, which is used to request non-3GPP access technology to access the core network Or, the registration request is used to request to use the 3GPP access technology to access the core network. It should be noted that the terminal can simultaneously use 3GPP and non-3GPP access technologies to access the core network, and this application does not limit the access technologies used by the terminal.

Wherein, if the third message is a registration request, the trigger time for the terminal to send the registration request may be when the terminal registration fails, when the terminal leaves the current registration area, or every time the terminal needs to re-register to the core network.

The terminal can carry capability information in the sent registration request, or it can carry capability information in other message requests. This application does not limit this, except that the terminal interacts with the core network to determine whether it has the ability to close non-3GPP data. Can.

Step 520: The second network element receives the third message from the terminal.

When the AMF receives the third message of the terminal, it needs to determine whether the terminal uses a non-3GPP access network, and further, it needs to determine whether there is a service supporting the non-3GPP access network in the subscription information of the terminal.

Among them, the contract information includes the service information subscribed by the terminal, and the identity information of the terminal, which is not limited in this application. The service information of the terminal is stored in the fourth network element. As an example, the fourth network element may be unified data management.

When needed, the second network element can be obtained from the fourth network element UDM. Secondly, after the terminal registers with the second network element, the second network element also saves the terminal's subscription information, but the subscription information stored in the second network element becomes invalid at the same time when the registered access network becomes invalid.

As an example, when the terminal is a mobile phone, the contract information of the terminal saved by the second network element is still valid during a short startup and restart process of the terminal.

Therefore, if the third message is a registration request, the second network element, after receiving the registration request from the terminal, determines whether the subscription information of the terminal is valid, and if the subscription information of the terminal is invalid, it will obtain the information from UDM The contract information of the terminal.

Step 530: The second network element sends a fourth message to the terminal, where the fourth message includes: second indication information, and the second indication information is used to indicate whether the core network has a non-3GPP data shutdown capability.

Wherein, if the third message sent by the terminal is a registration request, the fourth message sent by the second network element to the terminal may be a registration completion message.

As an example, when the subscription information of the terminal is determined and the terminal has the ability to close non-3GPP data, the AMF sends a registration completion message to the terminal. The registration complete message is used to notify the terminal that it has successfully accessed the core network through the non-3GPP access technology, and can use the network for communication.

Step 540: The terminal receives the fourth message from the second network element.

After receiving the fourth message, the terminal can determine whether the core network has the ability to close non-3GPP data. After the terminal and the core network have the ability to close non-3GPP data at the same time, the embodiment shown in FIG. 3 or FIG. 4 can be used to perform the non-3GPP data closing operation.

In the embodiment of this application, when the terminal sends a third message to the second network element to connect to the core network through non-3GPP access technology, the third message includes capability information, and the capability information is used to indicate whether the terminal has non-3GPP access technology. The ability to close data. At the same time, the second network element may also inform the terminal through the fourth message whether the core network to be accessed has the ability to close non-3GPP data. In this application, the terminal and the core network can mutually determine whether each other has the ability to close non-3GPP data, and in this way, the effectiveness of non-3GPP data closing can be improved. Avoid the fact that one party does not have the ability to close non-3GPP data, causing users to incur more charges when using network communications.

Based on the several embodiments shown above, there may be exempt services configured for the user by the operator and the core network in the subscription information of the terminal. After the terminal closes the non-3GPP data, the exempt service can still use the network for communication. Therefore, when the terminal closes the non-3GPP data, further, the exempt service of the terminal can be determined to ensure that the exempt service can still be used normally after the terminal closes the non-3GPP data. For example, exempt services for core network configuration include phone calls, text messages, and documents.

Please refer to FIG. 6, which is a flowchart of a data closing method provided by another exemplary embodiment of the present application. This method can be applied to the 5G communication system shown in FIG. 2 above. The data closing method is based on the above several implementations. For example, it can also include at least part of the following content:

Step 610: Obtain the second exempt service from the fourth network element.

The second exempt service is stored in the contract information of the terminal. Optionally, the second exempt service can be all exempt services contracted by the terminal, or part of exempt services contracted by the terminal, which is not restricted in this application.

The second exempt service may be obtained by the second network element from the fourth network element and sent to the terminal through the fourth message.

Step 620: The second network element sends a fourth message to the terminal, where the fourth message includes: second indication information and service information of the second exempt service.

The second indication information is used to indicate whether the core network has the ability to close non-3GPP data, and the second exempt service is the full set or subset of the exempt service subscribed by the terminal.

In addition, in step 610, the second exempt service may also be obtained by the first network element from the fourth network element and sent to the terminal through the second message. In this way, the above step 620 can be replaced with the following step 630:

Step 630: The first network element sends a second message to the terminal, where the second message includes service information of the second exempt service.

Figure 6 also includes the registration process of the terminal to the second network element, the non-3GPP data closing process of the terminal, and the situation when there is downlink data after the data is closed. For the above process, please refer to Figure 3, Figure 4, and Figure 5. The embodiments are not repeated here, and the above steps 610 to 630 only explain the process of obtaining the second exempt service.

In summary, the terminal can obtain the second exempt service from the fourth message, or obtain the second exempt service from the second message, or obtain the second exempt service in other ways. In addition, the core network may also notify the terminal of the corresponding second exemption service through other network elements. This application does not limit the time and method for the terminal to obtain the second exemption service or the core network to issue the second exemption service.

Based on the embodiment shown in FIG. 6 above, in a non-3GPP access network, the terminal may also determine its own exempt service, and notify the core network of the determined exempt service.

When sending the third message to the second network element, the terminal may notify the core network of the exempt service determined by itself. The terminal may also send a first message to the first network element to notify the core network of the exempt service determined by the terminal. The first message may be a PDU session establishment or modification request. Next, the two possible implementations are explained separately.

(1) The terminal sends a third message to the second network element. The third message includes capability information. The capability information is used to indicate whether the terminal has the ability to close non-3GPP data.

Optionally, the third message further includes: business information of the first exempt service, and the first exempt service is an exempt service determined by the terminal.

That is, the third message sent by the terminal may include capability information and service information of the first exempt service, and the service information of the first exempt service may be service identification, service category, service attribute, and so on. The third message may be a registration request. In a case where the third message sent by the terminal to the second network element is a registration request, the fourth message sent by the second network element to the terminal may be a registration completion message.

Therefore, in a possible implementation manner, after receiving the third message, the second network element obtains the terminal's contract information from the fourth network element, determines the second exempt service according to the terminal's contract information, and then sends the first exempt service to the terminal. Four messages, the fourth message includes: second indication information and service information of the second exempt service, the second indication information is used to indicate whether the core network has the ability to close non-3GPP data, and the second exempt service is the exempt service of the terminal contract Complete set or subset.

As an example, the exempt services contracted by the terminal include: business 1, business 2, business 3, business 4, and business 5. According to the communication status of the non-3GPP network that the terminal accesses, the second network element determines that the second exempt services available to the terminal at this time are: service 1, service 2 and service 4, then the second network element combines service 1, service 2 and service 4 The registration complete message is sent to the terminal. After the terminal closes the non-3GPP data, service 1, service 2 and service 4 can be used normally.

In the foregoing implementation manner, no matter what the first exempt service sent by the terminal is, the second network element informs the terminal of the second exempt service that can be used in the core network at this time. In this way, it can be ensured that the terminal can determine the exempt services that can be used normally after closing the non-3GPP data.

In another possible implementation manner, after receiving the third message, the second network element obtains the subscription information of the terminal from the fourth network element. Then send a fourth message to the terminal. The fourth message includes: second indication information and service information of the third exempt service. The second indication information is used to indicate whether the core network has the ability to close non-3GPP data. The third exempt service is based on The first exemption business and the second exemption business are determined, the first exemption business is the exemption business determined by the terminal, and the second exemption business is the complete set or subset of the exemption business contracted by the terminal.

As an example, the exempt services contracted by the terminal include: business 1, business 2, business 3, business 4, and business 5. According to the communication status of the non-3GPP network that the terminal accesses, the second network element determines that the second exempt services available to the terminal at this time are: service 1, service 2, and service 4. The first exempt service sent by the terminal includes: service 1 and service 3. Then the second network element sends the service 1 to the terminal through the registration completion message, and the service 1 can be used normally after the terminal closes the non-3GPP data.

In the above implementation, when determining the exempt services that can be used by the terminal, the decision of the terminal is fully considered. According to the first exemption service determined by the terminal and the second exemption service configured by the core network, it is determined that the terminal can be used normally after closing non-3GPP data. The business of the determined third exemption business is more in line with the user’s target needs under the condition that it is guaranteed to be available.

(2) The terminal sends a first message to the first network element, the first message includes: first indication information, and the first indication information is used to instruct the non-3GPP data of the terminal to close.

Optionally, the first message further includes: business information of the first exempt service, and the first exempt service is an exempt service determined by the terminal.

That is, the first message sent by the terminal may include the first indication information and service information of the first exempt service, and the service information of the first exempt service may be a service identifier, service category, service attribute, and so on. The first message may be a PDU session establishment or modification request. In the case where the first message sent by the terminal to the first network element is a PDU session establishment or modification request, the second message sent by the first network element to the terminal may be PDU session establishment or modification complete message.

Therefore, in a possible implementation manner, after receiving the first message, the first network element obtains the terminal's subscription information (second exemption service) from the fourth network element, and then sends the second message to the terminal. The second message includes the business information of the second exempt service, and the second exempt service is the complete set or subset of the exempt service subscribed by the terminal.

Optionally, the first network element may also obtain the subscription information of the terminal from the second network element.

As an example, the exempt services contracted by the terminal include: business 1, business 2, business 3, business 4, and business 5. According to the communication status of the non-3GPP network that the terminal accesses, the first network element determines that the second exempt services available to the terminal at this time are: service 1, service 2, and service 4. 4 Send the PDU session establishment or modification complete message to the terminal. After the terminal closes the non-3GPP data, service 1, service 2 and service 4 can be used normally.

In the foregoing implementation manner, no matter what the first exempt service sent by the terminal is, the first network element informs the terminal of the second exempt service that can be used in the core network at this time. In this way, it can be ensured that the terminal can determine the exempt services that can be used normally after closing the non-3GPP data.

In another possible implementation manner, after receiving the first message, the first network element obtains the terminal's subscription information (second exemption service) from the fourth network element or the second network element, and then sends the second network element to the terminal. Message, the second message includes the business information of the third exemption business, the third exemption business is determined based on the first exemption business and the second exemption business, the first exemption business is the exemption business determined by the terminal, and the second exemption business is the terminal contract The full set or subset of the exempt business.

As an example, the exempt services contracted by the terminal include: business 1, business 2, business 3, business 4, and business 5. According to the communication status of the non-3GPP network that the terminal accesses, the first network element determines that the second exempt services available to the terminal at this time are: service 1, service 2, and service 4. The first exempt service sent by the terminal includes: service 1 and service 3. Then the first network element sends service 1 to the terminal through a PDU session establishment or modification complete message. After the terminal closes the non-3GPP data, service 1 can be used normally.

In the foregoing implementation manner, when determining the exempt services that can be used by the terminal, the terminal's decision is fully considered. According to the first exemption service determined by the terminal and the second exemption service configured by the core network, the service that the terminal can normally use after closing non-3GPP data is determined, so that the determined third exemption service is more suitable for the user under the condition that the availability of the determined third exemption service is guaranteed. Target demand.

It should be understood that any combination of the above registration process, the sending method of the first exemption service, the data closing method, the sending method of the second exemption service, and the sending method of the third exemption service are all within the protection scope of this application. The several embodiments are for illustrative purposes only and not for limitation. It should be understood that other trigger timings can also be used for execution, and other implementation manners can also be used, including but not limited to any combination of the above.

Fig. 7 is a schematic diagram showing the structure of a data closing device according to an exemplary embodiment. The device 700 may be configured in a terminal, and the device 700 includes:

The sending module 710 is configured to send a first message to the first network element, where the first message includes: first indication information, and the first indication information is used to instruct the terminal to close the non-3GPP data.

Optionally, the first network element is a session management function SMF, and the first message is a protocol data unit PDU session establishment or modification request.

Optionally, the apparatus 700 further includes:

The receiving module 720 is configured to receive a second message from the first network element, the second message including: service information of the second exempt service, and the second exempt service is a complete set or subset of exempt services subscribed by the terminal.

Optionally, the receiving module 720 is also used for:

Receive a second message from the first network element, the second message includes: business information of the third exempt service, the third exempt service is determined based on the first exempt service and the second exempt service, and the first exempt service is determined by the terminal Exempted business, the second exempted business is the complete set or subset of the exempted business contracted by the terminal.

Optionally, the second message is a protocol data unit PDU session establishment or modification completion message.

Optionally, the terminal can use 3GPP and non-3GPP access technologies at the same time, and the apparatus 700 further includes:

The receiving module 720 is configured to receive the arrival notification of the downlink data sent by the second network element;

The switching module 730 is configured to switch the PDU session corresponding to the downlink data from non-3GPP to 3GPP, and use the switched PDU session to receive the downlink data.

Optionally, the sending module 710 is also used for:

A third message is sent to the second network element, the third message includes capability information, and the capability information is used to indicate whether the terminal has the ability to close non-3GPP data.

Optionally, the second network element is an access and mobility management function AMF, and the third message is a registration request.

Optionally, the receiving module 720 is also used for:

A fourth message is received from the second network element, where the fourth message includes: second indication information, and the second indication information is used to indicate whether the core network has a non-3GPP data shutdown capability.

Optionally, the fourth message further includes: business information of the second exempt service, where the second exempt service is a complete set or a subset of the exempt services subscribed by the terminal.

Optionally, the fourth message further includes: business information of the third exemption business, the third exemption business is determined based on the first exemption business and the second exemption business, the first exemption business is an exemption business determined by the terminal, and the second exemption business The business is the complete set or subset of the exempted business subscribed by the terminal.

Optionally, the fourth message is a registration completion message.

In the embodiment of the present application, the terminal may send a first message to the first network element, and the first message includes: first indication information. Since the first indication information is used to indicate that the non-3GPP data of the terminal is closed, the data closing function in the non-3GPP can be realized through the carried first indication information.

Fig. 8 is a schematic structural diagram showing a data closing device according to an exemplary embodiment. A first network element runs on the device, and the device 800 includes:

The receiving module 810 is configured to receive a first message from the terminal, where the first message includes a data closing instruction for non-3GPP access;

The sending module 820 is used to notify the third network element that the non-3GPP data of the terminal is closed.

Optionally, the sending module 820 is also used for:

Notify the third network element of the service information of the exempted service of the terminal.

Optionally, the first network element is a session management function SMF, the third network element is a user plane function UPF, and the first message is a protocol data unit PDU session establishment or modification request.

Optionally, the business information of the exemption service of the terminal includes: the business information of the first exemption service, and the first exemption service is an exemption service determined by the terminal.

Optionally, the service information of the exempted service of the terminal includes: the service information of the second exempted service, and the second exempted service is a complete set or a subset of the exempted services subscribed by the terminal.

Optionally, the sending module 820 is also used for:

Send a second message to the terminal, where the second message includes: service information of the second exempt service.

Optionally, the business information of the exemption service of the terminal includes: the business information of the third exemption business, the third exemption business is determined by the first exemption business and the second exemption business, the first exemption business is the exemption business determined by the terminal, and the first exemption business is the exemption business determined by the terminal. The second exemption business is the complete set or subset of the exemption business contracted by the terminal.

Optionally, the sending module 820 is also used for:

Send a second message to the terminal, where the second message includes: service information of the third exempt service.

Optionally, the first message carries service information of the first exempt service.

Optionally, the device 800 further includes:

The obtaining module 830 is configured to obtain the second exempt service from the fourth network element.

Optionally, the fourth network element is a unified data management UDM.

Optionally, the device 800 further includes:

The triggering module 840 is configured to trigger the second network element to send the arrival notification of the downlink data to the terminal when the terminal uses 3GPP and non-3GPP access technologies at the same time and downlink data arrives.

Optionally, the device 800 further includes:

The query module 850 is configured to query the second network element whether the terminal uses 3GPP and non-3GPP access technologies at the same time;

or,

The receiving module 810 is configured to receive a subscription notification sent by the second network element, and the subscription notification is used to notify the terminal whether to use 3GPP and non-3GPP access technologies at the same time.

Optionally, the second network element is the access and mobility management function AMF.

In the embodiment of the present application, the first network element receives a first message from the terminal, the first message includes a non-3GPP access data closing instruction; and notifies the third network element that the non-3GPP data of the terminal is closed. In this way, after the third network element knows that the non-3GPP data of the terminal is closed, it can stop the data charging in the non-3GPP access network, which can realize the data closing function in the non-3GPP and save the user's network charges.

Please refer to FIG. 9, which shows a schematic structural diagram of a communication device (terminal or access network device) provided by an exemplary embodiment of the present application. The communication device includes a processor 901, a receiver 902, a transmitter 903, and a memory. 904 and bus 905.

The processor 901 includes one or more processing cores, and the processor 901 executes various functional applications and information processing by running software programs and modules.

The receiver 902 and the transmitter 903 may be implemented as a communication component, and the communication component may be a communication chip.

The memory 904 is connected to the processor 901 through the bus 905.

The memory 904 may be configured to store at least one instruction, and the processor 901 is configured to execute the at least one instruction, so as to implement each step executed by the first IAB network device in the foregoing method embodiments.

In addition, the memory 904 can be implemented by any type of volatile or non-volatile storage device or a combination thereof. The volatile or non-volatile storage device includes, but is not limited to: magnetic disks or optical disks, EEPROM (Electrically Erasable Programmable read only memory, electrically erasable programmable read-only memory), EPROM (Erasable Programmable Read-Only Memory, erasable programmable read-only memory), SRAM (Static Random Access Memory, static access memory at any time), ROM (Read Only Memory, magnetic memory, flash memory, PROM (Programmable Read-Only Memory).

The present application provides a computer-readable storage medium in which at least one instruction is stored, and the at least one instruction is loaded and executed by the processor to implement the data closing method provided by each method embodiment described above.

The present application also provides a computer program product, which when the computer program product runs on a computer, causes the computer to execute the data closing method provided by the foregoing method embodiments.

Those skilled in the art should be aware that, in one or more of the foregoing examples, the functions described in the embodiments of the present application may be implemented by hardware, software, firmware, or any combination thereof. When implemented by software, these functions can be stored in a computer-readable medium or transmitted as one or more instructions or codes on the computer-readable medium. The computer-readable medium includes a computer storage medium and a communication medium, where the communication medium includes any medium that facilitates the transfer of a computer program from one place to another. The storage medium may be any available medium that can be accessed by a general-purpose or special-purpose computer.

The above are only optional embodiments of this application and are not intended to limit this application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this application shall be included in the protection of this application. Within range.

Claims

A data closing method, characterized in that it is applied to a terminal, and the method includes:

Send a first message to the first network element, where the first message includes: first indication information, where the first indication information is used to indicate that the non-3GPP data of the terminal is closed.
The method according to claim 1, wherein the first message further comprises: business information of a first exempt service, and the first exempt service is an exempt service determined by the terminal.
The method according to claim 1 or 2, wherein the first network element is a session management function SMF, and the first message is a protocol data unit PDU session establishment or modification request.
The method according to claim 1, wherein the method further comprises:

Receiving a second message from the first network element, the second message including: service information of a second exempt service, the second exempt service being a complete set or a subset of the exempt service subscribed by the terminal.
The method according to claim 2, wherein the method further comprises:

Receiving a second message from the first network element, the second message including: business information of a third exempt service, the third exempt service being determined based on the first exempt service and the second exempt service, the The first exemption service is an exemption service determined by the terminal, and the second exemption service is a complete set or a subset of the exemption services subscribed by the terminal.
The method according to claim 4 or 5, wherein the second message is a protocol data unit PDU session establishment or modification completion message.
The method according to any one of claims 1-6, wherein the terminal can use 3GPP and non-3GPP access technologies at the same time, and the method further comprises:

Receiving a notification of the arrival of downlink data sent by the second network element;

The PDU session corresponding to the downlink data is switched from the non-3GPP to the 3GPP, and the PDU session after the switching is used to receive the downlink data.
The method according to any one of claims 1-6, wherein the method further comprises:

A third message is sent to the second network element, where the third message includes capability information, and the capability information is used to indicate whether the terminal has a non-3GPP data shutdown capability.
The method according to claim 8, wherein the third message further comprises: business information of a first exempt service, and the first exempt service is an exempt service determined by the terminal.
The method according to any one of claims 7-9, wherein the second network element is an access and mobility management function AMF, and the third message is a registration request.
The method according to any one of claims 1-10, wherein the method further comprises:

Receive a fourth message from the second network element, where the fourth message includes: second indication information, where the second indication information is used to indicate whether the core network has a non-3GPP data shutdown capability.
The method according to claim 11, wherein the fourth message further comprises: service information of a second exempt service, and the second exempt service is a complete set or a subset of the exempt service subscribed by the terminal.
The method according to claim 11, wherein the fourth message further comprises: business information of a third exemption service, the third exemption service is determined based on the first exemption service and the second exemption service, so The first exemption service is an exemption service determined by the terminal, and the second exemption service is a complete set or a subset of the exemption services subscribed by the terminal.
The method according to any one of claims 11-13, wherein the fourth message is a registration completion message.
A data closing method, characterized in that it is applied to a first network element, and the method includes:

Receiving a first message from the terminal, where the first message includes a data closing instruction for non-3GPP access;

Notifying the third network element that the non-3GPP data of the terminal is closed.
The method according to claim 15, wherein the method further comprises:

Notifying the third network element of the service information of the exempted service of the terminal.
The method according to claim 15 or 16, wherein the first network element is a session management function SMF, the third network element is a user plane function UPF, and the first message is a protocol data unit PDU session Create or modify request.
The method according to claim 16, wherein the business information of the exempted service of the terminal comprises: the business information of a first exempted service, and the first exempted service is an exempted service determined by the terminal.
The method according to claim 16, wherein the business information of the exempted service of the terminal comprises: the business information of a second exempted service, and the second exempted service is a complete set or a subset of the exempted services subscribed by the terminal set.
The method according to claim 19, wherein the method further comprises:

Send a second message to the terminal, where the second message includes: service information of the second exempt service.
The method according to claim 16, wherein the business information of the exemption service of the terminal comprises: the business information of the third exemption business, and the third exemption business is determined by the first exemption business and the second exemption business The first exemption service is an exemption service determined by the terminal, and the second exemption service is a complete set or a subset of the exemption services subscribed by the terminal.
The method according to claim 21, wherein the method further comprises:

A second message is sent to the terminal, where the second message includes: service information of the third exempt service.
The method according to claim 18 or 21, wherein the first message carries service information of the first exempt service.
The method according to claim 19 or 21, wherein the method further comprises:

Obtain the second exempt service from the fourth network element.
The method according to claim 24, wherein the fourth network element is a unified data management UDM.
The method according to any one of claims 15-25, wherein the method further comprises:

When the terminal uses 3GPP and non-3GPP access technologies at the same time, and downlink data arrives, trigger the second network element to send the downlink data arrival notification to the terminal.
The method according to claim 20, wherein the method further comprises:

Asking the second network element whether the terminal uses the 3GPP and non-3GPP access technologies at the same time;

or,

Receive a subscription notification sent by the second network element, where the subscription notification is used to notify the terminal whether to use the 3GPP and non-3GPP access technologies at the same time.
The method according to claim 26 or 27, wherein the second network element is an access and mobility management function AMF.
A data closing device, characterized in that it is configured in a terminal, and the device includes:

The sending module is configured to send a first message to a first network element, where the first message includes: first indication information, and the first indication information is used to indicate that the non-3GPP data of the terminal is closed.
The apparatus according to claim 29, wherein the first message further comprises: business information of a first exempt service, and the first exempt service is an exempt service determined by the terminal.
The apparatus according to claim 29 or 30, wherein the first network element is a session management function SMF, and the first message is a protocol data unit PDU session establishment or modification request.
The device according to claim 29, wherein the device further comprises:

The receiving module is configured to receive a second message from the first network element, the second message including: business information of a second exempted service, and the second exempted service is a complete set of exempted services subscribed by the terminal or Subset.
The device according to claim 30, wherein the receiving module is further configured to:

Receiving a second message from the first network element, the second message including: business information of a third exempt service, the third exempt service being determined based on the first exempt service and the second exempt service, the The first exemption service is an exemption service determined by the terminal, and the second exemption service is a complete set or a subset of the exemption services subscribed by the terminal.
The device according to claim 32 or 33, wherein the second message is a protocol data unit PDU session establishment or modification completion message.
The device according to any one of claims 29-34, wherein the terminal can use 3GPP and non-3GPP access technologies at the same time, and the device further comprises:

The receiving module is configured to receive the arrival notification of downlink data sent by the second network element;

The switching module is configured to switch the PDU session corresponding to the downlink data from the non-3GPP to the 3GPP, and use the switched PDU session to receive the downlink data.
The device according to any one of claims 29-34, wherein the sending module is further configured to:

A third message is sent to the second network element, where the third message includes capability information, and the capability information is used to indicate whether the terminal has a non-3GPP data shutdown capability.
The apparatus according to claim 36, wherein the third message further comprises: business information of a first exempt service, and the first exempt service is an exempt service determined by the terminal.
The apparatus according to any one of claims 35-37, wherein the second network element is an access and mobility management function AMF, and the third message is a registration request.
The device according to any one of claims 29-38, wherein the receiving module is further configured to:

Receive a fourth message from the second network element, where the fourth message includes: second indication information, where the second indication information is used to indicate whether the core network has a non-3GPP data shutdown capability.
The apparatus according to claim 39, wherein the fourth message further comprises: business information of a second exempt service, and the second exempt service is a complete set or a subset of exempt services subscribed by the terminal.
The device according to claim 39, wherein the fourth message further comprises: business information of a third exemption service, the third exemption service is determined based on the first exemption service and the second exemption service, so The first exemption service is an exemption service determined by the terminal, and the second exemption service is a complete set or a subset of the exemption services subscribed by the terminal.
The device according to any one of claims 39-41, wherein the fourth message is a registration completion message.
A data closing device, characterized in that it is configured in a first network element, and the device includes:

A receiving module, configured to receive a first message from the terminal, where the first message includes a data closing instruction for non-3GPP access;

The sending module is used to notify the third network element that the non-3GPP data of the terminal is closed.
The device according to claim 43, wherein the sending module is further configured to:

Notifying the third network element of the service information of the exempted service of the terminal.
The apparatus according to claim 43 or 44, wherein the first network element is a session management function SMF, the third network element is a user plane function UPF, and the first message is a protocol data unit PDU session Create or modify request.
The apparatus according to claim 44, wherein the business information of the exempted service of the terminal comprises: the business information of a first exempted service, and the first exempted service is an exempted service determined by the terminal.
The apparatus according to claim 44, wherein the business information of the exempted service of the terminal comprises: the business information of a second exempted service, and the second exempted service is a complete set or a subset of the exempted services subscribed by the terminal set.
The device according to claim 47, wherein the sending module is further configured to:

Send a second message to the terminal, where the second message includes: service information of the second exempt service.
The device according to claim 44, wherein the business information of the exemption service of the terminal comprises: the business information of the third exemption business, and the third exemption business is determined by the first exemption business and the second exemption business The first exemption service is an exemption service determined by the terminal, and the second exemption service is a complete set or a subset of the exemption services subscribed by the terminal.
The device according to claim 49, wherein the sending module is further configured to:

A second message is sent to the terminal, where the second message includes: service information of the third exempt service.
The apparatus according to claim 46 or 49, wherein the first message carries service information of the first exempt service.
The device according to claim 47 or 49, wherein the device further comprises:

The obtaining module is used to obtain the second exempt service from the fourth network element.
The device according to claim 52, wherein the fourth network element is a unified data management UDM.
The device according to any one of claims 43-53, wherein the device further comprises:

The trigger module is configured to trigger the second network element to send the arrival notification of the downlink data to the terminal when the terminal uses 3GPP and non-3GPP access technologies at the same time and downlink data arrives.
The device according to claim 48, wherein the device further comprises:

The query module is configured to query the second network element whether the terminal uses the 3GPP and non-3GPP access technologies at the same time;

or,

The receiving module is configured to receive a subscription notification sent by the second network element, where the subscription notification is used to notify the terminal whether to use the 3GPP and non-3GPP access technologies at the same time.
The device according to claim 54 or 55, wherein the second network element is an access and mobility management function AMF.
A terminal, characterized in that the terminal includes a processor and a memory, the memory stores at least one instruction, and the at least one instruction is used to be executed by the processor to implement the method of any one of claims 1-14 A step of.
A first network element, wherein the first network element includes a processor and a memory, the memory stores at least one instruction, and the at least one instruction is used to be executed by the processor to implement claim 15 -28 Steps of any method.
A computer-readable storage medium having instructions stored on the computer-readable storage medium, characterized in that, when the instructions are executed by a processor, the steps of the method according to any one of claims 1-11 are implemented.
A computer-readable storage medium having instructions stored on the computer-readable storage medium, characterized in that, when the instructions are executed by a processor, the steps of any one of the methods of claims 15-28 are implemented.